Piston-valve



(Model.)

0. H. HYSSONCT- PISTON VALVE.

Patentd Sept. 11, 1883. Ziyil.

WITNESSES INVENTOR: m f

ATTORISBIKS.

N. FUERS PhOlD-LHMKFIPMP. Wnmnpm B c UNITED STATES PATENT OFFICE.

CHARLES H. HTSSONG, OF ALTOONA, PENNSYLVANIA.

PISTON-VALVE.

SPECIFICATION formingpart of Letters Patent No. 284,964, dated September11, 1883.

Application filed June 18, 1883. (Model.)

T aZZ whom it may concern.-

Be it known that I, CHARLES H. HYssoNG, of Altoona, in the county ofBlair and State of Pennsylvania, have invented a new and ImprovedPistonValve, of which the following hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a sectional side view of my improved valve and case, andFigs. 2 and 3 are cross-sections of the heads of the valve.

A is the rod or piston of the valve, and B B the heads, secured on therod by nuts a b c.

O is the case, formed with an aperture of a size to receive the heads B,so that they may slide therein above the steam and exhaust ports d. Asshown in Fig. 3, each piston-head B is formed by follower-plates e,clamped upon an expansion packing-ring, f, by the nuts (0 1). Within thering f is an expansion-ring, g, sustained by springs h on ring-segmentsi,that in turn rest on tapering segment-blocks k, and atapering collar,Z, on rod A. The collar Zis turned down to allow of its endwisemovement, and is threaded on its end,projecting through one plate, 6, toreceive the nut I). It is also grooved to engage a lug, m, on bolt to,to prevent the collar from turning. This construction allows adjustmentof the collar Z, so as to expand the packing-ring more or less, and aset-nut, c,

with its washer a, retains the parts as adjusted. The heads B can alsobe adjusted on rod A tovary the lap and lead, and the length of theexhaust-cavity. The case C relieves the valveand the packings set upwithout removing the heads from the case.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent I The combination, with the piston-rod A,threaded, as shown, and having lug m, the heads B B, the nuts a b c, andthe .case O,having ports (I, of the follower-plates e e, expansion-ringsf g, springs h, segments and blocks 5 k, and grooved end-threaded collar1, as shown and described.

CHARLES H. HYSSONG.

\Vitnesses:

MORTIMER ULLEY, HARRY J. Hour.

